set-harmonic-interval/lib/index.esm.js

Works similar to `setInterval`, but calls all callbacks scheduled using `setHarmonicInterval` all at once, which have same delay in milliseconds.

var counter = 0;
var buckets = {};
var setHarmonicInterval = function (fn, ms) {
    var _a;
    var id = counter++;
    if (buckets[ms]) {
        buckets[ms].listeners[id] = fn;
    }
    else {
        var timer = setInterval(function () {
            var listeners = buckets[ms].listeners;
            var didThrow = false;
            var lastError;
            for (var _i = 0, _a = Object.values(listeners); _i < _a.length; _i++) {
                var listener = _a[_i];
                try {
                    listener();
                }
                catch (error) {
                    didThrow = true;
                    lastError = error;
                }
            }
            if (didThrow)
                throw lastError;
        }, ms);
        buckets[ms] = {
            ms: ms,
            timer: timer,
            listeners: (_a = {},
                _a[id] = fn,
                _a),
        };
    }
    return {
        bucket: buckets[ms],
        id: id,
    };
};
var clearHarmonicInterval = function (_a) {
    var bucket = _a.bucket, id = _a.id;
    delete bucket.listeners[id];
    var hasListeners = false;
    for (var listener in bucket.listeners) {
        hasListeners = true;
        break;
    }
    if (!hasListeners) {
        clearInterval(bucket.timer);
        delete buckets[bucket.ms];
    }
};

export { clearHarmonicInterval, setHarmonicInterval };